Festival Blankets SF With Sensors

The Market Street Prototype Festival in San Francisco, will blanket the city’s downtown with 50 community-oriented installations over three days next April. Each project’s success will be measured with sophisticated sensors that track how many participants come by and for how long.
http://recode.net/2014/08/16/festival-could-blanket-downtown-sf-with-sensors-and-butterflies/
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